Sucker-rod-pulling device.



. J. B. DUNLAP & w. 1). BRYAN.

SUOKER BQD PULLING DEVICE. APPLICATION FILED APB-'18, 1913- 1,109,668, Patented Sept. 8, 1914,

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Tiff NORRIS PI TERS wurumliruoqlusumomu. D C.

UNITED STATES ATE T OFFICE. 1

cosnrn B. nunrcAr an!) WILLIAM B. BRYAN, 0F TULSA, OKLAHOMA.

KE -ROD-rU LING 'nsvrcn. a

Patented Sept. 8, 1914..

Application filedApril 18, 1913. Serial No. 761,973.

To all whom it may concern." 1 i i I JOSEPH B. DUNLAP Be it known that we, and WILLIAM D. Bnrnm citizens of the United States, and residents of Tulsa, in the county of Tulsa and State: of flOklahoma, have made a new and useful Improvement in Sucker-Rod-Pulling Devices, of which I 1 opening 2. Each of the said gripping jaws the followingis a specification. 7

- Our,1nvent1on 1s an lmprovement in de-Ij vices for lifting tubing, andhas for its ,ob-: ject to. provide a device ofthe character? specified, having means for utilizing thenor- 1 1 dinary pumping jack for lifting the sucker rodsand tubing from oil wells and the like, thus dispensing with the necessity fora; sucker ro'dpulling'machine' In the drawings :-jF-igure Fig. 2is a section on the line 2-2 ofFigl, Fig. 3 is a section on the l1ne 3-3 of Flg. 2, and, Flg. 4 1s a diagrammatic view showing the operation.

The present embodiment of the invention consists of a bed plate 1, having a central opening 2, extending through the said plate,

and the said plate in use is about one square foot in area and one inch in thickness. At each corner of the opening 2 the bed plate 1 is provided with a notch or recess-3, the

said notch or recess formingthe lower sect10n of a bearing, and each notch or recessv extends outwardly from the adjacent corner of the opening. I

The notches or recesses 3 at each side of the opening 2 are in alinement, and gri P i ing, the said jaws being connected to the bed plate in the following described manner.

Each ofthe said jaws is provided at one side edge with journal pins6, the said pins of each jaw being in alinement, andthe said pins are adapted to engage OITeStlI]. the notches or recesses 3 before mentioned.

1 The notches or recesses 3 are of suitable,

depth as shown, and the jaws are rounded to fit the journal pins. An upper bearing section? is arranged in each recess above the journal pin, each of the said sections 7 having its end face rounded to fit the journal pin, and forming with the recess 3 a complete cylindrical bearing. Each of the, said bearing sections Thaslateral flanges 8, the said flanges extending in opposite directions, and lapping upon the upper face of the bed plate, and screws?) are passed through the.

1 is a perspec-. tive -'V1GW of one of the lmproved devlces,

aws 4 and 5 are arranged in the open-;

I Each of the cam said fiange'sinto threaded openings 10 in the bed plate, to hold the bearing section; 7 to the bed plate. The gripping jaws 4 and 5 are thus hinged to the bed plate at their outer orremote side edges, and the said plates are 'of an aggregate "width slightly greater than the aggregate length ofthe gular lug 16, extending in an opposite direction to the lug 142', and a lever 1! is pivoted at one ofits ends to lug 16, by means of a bolt and nut 18. A slidebar 19 ismounted to, shde on the upper face of the bedplate,

toward and from the opening 2, and the said bar is provided with a longitudinally ex-v tending slotv 20,, which is engaged by a headed pin 21, connected with the bed plate. Arc-shaped cam fingers 22 and 22* are connected with the slide bar, the said slide bar having its inner end provided with a tenon i 23, and the outer ends of the said fingers are rivet 24, the fingers being mounted on opposite sidcs of the tenon. .The arrangement is such, that the outer faces of the upperand lower fingers are flushed with the face of the slideban' fl fingers 22 and 22 is pro- Videdwith a longitudinally extended slot 25, and each slot is engaged by a headed pin 26' on the bed plate. The cam finger 22 connected to the upper face of the tenon is ofiset downwardly at its inner end so thatthe freecurved ends of the said fingers are in the same plane and in contact with the upper face of the bed plate. v

The cam fingers 22 and 22 are curved outwardly, away from each" other toward their inner or free ends, andthe said fingers engage beneath the jaws.

,nection the slide bar willbe moved toward and from the opening 2 to cause the cam pivoted to the tenonby means of a bolt or 1 tween the gripping I jaws.

jaws will be swung to cause their inneredges to move upwardly and to separate, while the reverse movement of the lever will permit the jaws to move downward to grip the tubing or sucker rod. The jaws-and 5" are thus operated to cause them to grip or to release the pipe to be lowereidby means'of the cam fingers 22-and 22*.

In operation, two of the lmproved devlces are made use of; for llftlllg sucker rod and 1, tubing, 01' for lowering theisaid sucker rod or tubing 1n the well casing. In thei first,

PlZLCG, the :jackhead is disconnected from the sucker rod, 1 and? the stufling box is then disconnected. ;Pre-ferably,-one :of the devices =is provided withaa longer lever= than the other and the saidwdevice having the longeralever :is placedon'top of the well casing, with the tubing orsucker rod tobe lifted .-;passing 1 through the opening Q be- The' second device is then-placed on the'head of thejaek with the rod or tubing to be raised extending through the opening-2 between the aws. When all is 'ready, thelever 17y is'operated tomove the cam fingers outwardly,:thus permittingwthe grippingjaws to swing downwardly at-theiradj acent side theqjaw; thereby,-to gr ip?thetubing iorthe rod. As the jack makes its upward stroke, the rod or tubing-will be liftedpusually la distance of approximately 18 inches, and as soon as the jack heard moves downward' the j aws of'the lower' plate will automatically: grip: the rod and hold it until the j ack head moves *downward for another hit. )Asthe ack head moves downward; the: gripping detice connected therewithwill release the rod or tabing, and will move downward to secure a secgnd grip'ron the rod or tubing.

I *NVhenit 1 is desired to lower rods or tubv 1ng 111130 a well casing, the dev-1ces'-arearranged as above specified, and when the" jack moves upward, the/upper -j aws=are held open until the sai'd jaws area-bout one inch from the top of the stroke ot the jack. Thejaws are then released and' clamp the "rod. The

final farther: upward' movement-of one inch is sufficient torelease the jaws of the lower device, wand the said jaws are then i held in lifted position until the j aok' is near the end of its upward stroke, that iswithin a distance of one inch of the end of the stroke. "The jaws of the lower device are then engaged withtherod "or tnbing,:the farther;

downward-movement of the jack relcasing the aiws of the upper device.

We claim *1. A device of the character "specified,

hinged tothe bed plate, and means for simultaneously swinging the said jaws with respect to.the bedplate tomove the said free edges upwardly and outwardly, said means comprising a lever pivoted at one end of the bed plate, a slide bar movable towardand from the opening on the upper face of the bed plate, said slidebar being in '-approximate alinement with the free edges of the jaws, a slidable connection between the said barandthe bed plate, a pivotal'connection between the outer end of the barand= the lever, arc-shaped caI'n fingers, said fingers being oppositelyarranged and each fingerbeing pivoted at its outer end to-the inner end oftheslide'bar, theconvex edges of the fingers being adjacent and the said fingers diverging toward their free ends, the said freeends extending above the 'openingof 'the bed plate and beneath the adjacent gripping jaws, anda slidable connection between each I cam finger and I the bed plate.

'2. A device-of the "character specified, coin-prising a bed plate having a central opening, gripping j aws in theopeningand said' jaws being hinged to the' bed plate, and meansforsimultaneously swinging the said jaws with respe'ct to the bed plate to move the said free edges upwardly and outwardly,

said 1 means comprising a lever j pivoted at one end of the bed plate, a slide'bar movable toward-and fromthe opening on -the upper face "of the bed plate, said slidebar being in approximate alinement witlr'the free edges "of the jawsfa sli darble connection between the said -barand the bedplate, a pivotal connection between the *outer end of the bar.

and the lever, cam fingers slidably connected to* the* bed plate and having their inner ends extending-above the opening of i the bed plate and beneath the adjacent gripping jaw to raise the said jaws when the fingers are moving toward the opening, and a connection between the said fingers and the slide bar. r

3. A 'device of -'the *character "specified, comprising a bed plate having a central opening, gripping =ja-ws -mounted in the opening"- and hinged to "the bed plate, and inear-1s-for simnltaneousl y swinging the said jaws with res ect to the bedplate to move the said free edges upwardly andoutwardly, said means comprising-oppositely arranged and pivotally connected camfingers; mounted to-sliide on the bed. plate toward and'from the igrippin'g 'jaws "at one end thereof, and imeans for =simiiltaneously moving 1 the said fingers, said means comprisinga lever pivoted 1 to {the bed plate, and connection between the lever and the cam vfingers.

4. A {device of the character specified,

j comprisinga bed plate having-a central opening, gripping.-jaws *mounted in the *opening andhing'ed'to thebed plate, and

"ISO

means for simultaneously swinging the said means for simultaneously moving the said jawswith respect to the bed plate to move fingers.

the said free edgesupwardly and outwardly, JOSEPH B. DUNLAP.

said means comprising oppositely arranged WILLIAM D'. BRYAN. 5 and pivotally connected cam fingers mount- Witnesses: v

ed to. slide on the bed platetoward and from JOHN L. REARDON,

the gripping jaws at one end tliereofl'and JOHN R. CLARK.

Copies of this patent may be obtained for five cents eaeh,,by addressing the" Commissioner of Patents,

, l Washington, D. G. 

